Month guide · Phoenix · United States
Phoenix in September
What September is really like in Phoenix: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Yassie, CC BY-SA 3.0
Quick answer
September is a quieter month with trade-offs. Expect average highs of 38°C (100°F), lows of 26°C (79°F), about 3 rainy days and roughly 12.3 hours of daylight. Still very hot; monsoon ends late in the month.
Key facts
- Average high / low
- 38°C (100°F) / 26°C (79°F)
- Rainy days
- About 3
- Daylight
- About 12.3 hours
- Crowds
- Quiet
- Hotel prices
- Low
Weather in September
September is the 4th-warmest month in Phoenix: days average 38°C (100°F) against a yearly average high of 31°C (88°F), and nights fall to about 26°C (79°F). Rain falls on roughly 3 of its 30 days. Compared with August (41°C (106°F)), September is cooler; by October highs drop to around 32°C (90°F).
- Sunrise (15 September)
- About 06:11
- Sunset (15 September)
- About 18:35
- Daylight
- About 12.3 hours
Autumn (October–November). Heat breaks through October, and November is warm, dry and ideal for hiking.
Crowds and prices
On a 1–5 scale, September rates 2 for crowds (the peak is February at 5) and 2 for hotel prices (highest in January). That makes September one of the better-value months to book.
Events in September
- Monsoon season officially ends (30 September)
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in September
With intense heat, plan around indoor sights and keep outdoor time flexible.
Aquarium · Scottsdale
OdySea Aquarium
Combine it with Butterfly Wonderland next door for a full indoor day in hot weather.
- Time needed
- 2–3 hours
- Cost
- Expensive
- Kids
- Rainy day
Museum · Downtown Phoenix
Arizona Capitol Museum
The 1901 territorial capitol, with its copper dome topped by a Winged Victory weathervane, is now a free museum of Arizona history and government.
- Time needed
- 1 hour
- Cost
- Free
- Free
- History
- Rainy day
Garden · Papago Park
Desert Botanical Garden
Visit at opening or in the evening in warmer months; in December, the luminaria nights light the paths with thousands of candle bags.
- Time needed
- 2–3 hours
- Cost
- Mid-priced
- Iconic
- Outdoors
- Nature
- Photo spot
- Couples
Nature · Arcadia
Camelback Mountain
The city's signature hike climbs the 'hump' of Camelback Mountain, whose summit stands about 820 metres above sea level.
- Time needed
- 2–3 hours
- Cost
- Free
- Iconic
- Free
- Views
- Active
- Outdoors
What to pack
For highs near 38°C, lows near 26°C and 3 wet days: light, breathable clothes, a sun hat and high-factor sunscreen; comfortable walking shoes.
Is September a good time to visit Phoenix?
A quieter month with trade-offs, with a notable event on the calendar. If your dates are flexible, November–April are better overall. Compare every month.
Phoenix in other months
Questions travellers ask
+Is September a good time to visit Phoenix?
It is a quieter month with trade-offs. Still very hot; monsoon ends late in the month.
+How warm is Phoenix in September?
Average highs are around 38°C (100°F) and lows around 26°C (79°F).
+Does it rain a lot in Phoenix in September?
Expect rain on about 3 days of the month, so it is usually dry.